Self-adaptive door stopper

Abstract

The self-adaptive door stopper comprises an upper stopper seat and a lower stopper seat, the upper stopper seat is connected to a door leaf, the upper stopper seat comprises an upper main body and a magnet, and the magnet is arranged at the bottom of the upper main body; the lower suction seat is fixedly connected to the ground and comprises a lower main body and a magnetic suction plate, and the magnetic suction plate is rotationally connected to the lower main body; the magnetic attraction device is characterized in that the magnetic attraction plate comprises a first connecting plate and a second connecting plate, the two ends of the first connecting plate are rotationally connected to the lower main body and the second connecting plate respectively, the second connecting plate is rotationally connected to the first connecting plate, and when the upper attraction base passes through the upper portion of the lower attraction base along with the door leaf from front to back, the upper attraction base is fixedly connected with the lower attraction base. The first connecting plate and the second connecting plate can be attracted by the magnet, and the second connecting plate can rotate after being attracted so as to be adaptively and flatly attached to the magnet or the lower surface of the upper body.

Description

Technical Field

[0001] The present invention relates to the technical field of door stoppers, and particularly relates to a self - adapting door stopper. Background Art

[0002] Common door stoppers on the market include mechanical clamping door stoppers and magnetic door stoppers. Among them, the magnetic door stopper generally includes a magnetic seat installed on the door leaf and an iron suction seat installed on the wall or floor. When the door leaf approaches the iron suction seat, the magnetic iron block on the magnetic seat on the door leaf can be attracted to the iron sheet on the iron suction seat and combined together. For example, the Chinese utility model patent with the publication number CN219119008U discloses a door stopper device. The door stopper device includes a base set on the ground, a magnetic sheet with one end movably connected to the base. The magnetic sheet can swing up and down relative to the base; a mounting seat set on the door panel, an insertion slot set at the bottom of the mounting seat, the insertion slot has an opening inclined downward, and the opening can allow the magnetic sheet to be inserted; a magnet is also set at the bottom of the mounting seat, and the lower surface of the magnet is also arranged obliquely. The magnet is used to adsorb the magnetic sheet so that the other end of the magnetic sheet is lifted upward. This kind of magnetic door stopper has a swinging magnetic sheet, which is laid flat to save space when not in use and rises to combine with the magnet when in use. However, the actual installation conditions of the door leaf are different, and the distance between the door and the ground cannot be unified, which makes the height distance between the mounting seat and the base different. In this way, the swinging angle of the magnetic sheet affects its contact area with the lower surface of the magnet, thus affecting the bonding strength of the door stopper. In addition, too large a swing angle of the magnetic sheet will also prevent the magnetic sheet from being inserted into the opening inclined downward of the insertion slot, greatly affecting the suction effect of the door. Summary of the Invention

[0003] In order to overcome at least one of the above problems existing when the magnetic sheet of the magnetic door stopper in the prior art is attracted to the magnet, the present invention provides a self - adapting door stopper, which includes an upper suction seat and a lower suction seat. The upper suction seat is connected to the door leaf. The upper suction seat includes an upper main body and a magnet, and the magnet is arranged at the bottom of the upper main body; the lower suction seat is fixedly connected to the ground, and the lower suction seat includes a lower main body and a magnetic suction plate, and the magnetic suction plate is rotatably connected to the lower main body; characterized in that, the magnetic suction plate includes a first connecting plate and a second connecting plate, both ends of the first connecting plate are respectively rotatably connected to the lower main body and the second connecting plate, and the second connecting plate is rotatably connected to the first connecting plate. When the upper suction seat passes over the lower suction seat from front to back along with the door leaf, the magnet can lift up the first connecting plate and the second connecting plate, and the second connecting plate can rotate after being lifted up so as to adapt to and be flatly attached to the lower surface of the magnet or the upper main body.

[0004] Among them, the upper suction seat is a component that is relatively movably arranged above the lower suction seat and can move together with the door leaf. It includes an upper main body, a magnet provided on the upper main body, and a baffle mentioned below. There are at least two ways to connect the upper main body to the door leaf. The first way is to provide a groove at the bottom of the door leaf, and the upper main body is installed in the groove;

[0005] The second way is to provide connection through holes on the upper main body, and screws pass through the connection through holes to fixedly connect the upper main body to the side wall of the door leaf. The second installation method is convenient for installation. The installation method of the magnet is also diverse. One way is to provide a downward-opening installation port at the bottom of the upper main body, and the magnet is installed in the installation port, and the lower surface of the magnet is exposed; Another way is to provide magnet installation holes on the side wall of the upper main body, and the magnet is arranged in the magnet installation holes.

[0006] Among them, the lower suction seat is a component fixed to the ground, but the magnetic attraction plate connected to the lower main body can be attracted by the magnet. When the magnetic attraction plate is attracted to the magnet, the rotation of the door leaf can be restricted. A storage hole is provided on the lower main body, and the first connecting plate and the second connecting plate can be folded and stored in the storage hole. Before the lower suction seat is combined with the upper suction seat, the end of the lower suction seat facing the upper suction seat or the door leaf is the front end, and the end far from the upper suction seat or the door leaf is the rear end.

[0007] Among them, the magnetic attraction plate is a magnetic iron plate that can be attracted by the magnet. Since the magnetic attraction plate includes the first connecting plate and the second connecting plate that are rotatably connected, and since the second connecting plate is a movable component connected to the end and is also the main component that is attracted to the magnet, in order to ensure the attraction effect between the magnetic attraction plate and the magnet, both the first connecting plate and the second connecting plate are magnetic iron plates or at least the second connecting plate is a magnetic iron plate.

[0008] Among them, the first connecting plate and the second connecting plate are two plate-shaped components that are rotatably connected. The two can be folded and stored or unfolded and extended through rotation. In the unfolded and extended state, the lower main body, the first connecting plate, and the second connecting plate are in a Z shape. The lower end of the first connecting plate is rotatably connected to the lower main body, and the upper end of the first connecting plate is connected to the second connecting plate. The connection position between the first connecting plate and the second connecting plate is flexible, and the connection position can be set at one end or the middle of the second connecting plate, so that the other end of the second connecting plate becomes a free end.

[0009] There are at least the following two specific connection methods for the lower body, the first connecting plate and the second connecting plate. First, the front end of the first connecting plate is connected to the front end of the lower body, the rear end of the first connecting plate is connected to the rear end of the second connecting plate, and the front end of the second connecting plate faces the upper suction seat and can swing up and down. Second, the rear end of the first connecting plate is connected to the rear end of the lower body, the front end of the first connecting plate is connected to the front end of the second connecting plate, and the rear end of the second connecting plate can swing up and down. Among them, the first is the preferred connection method because the angle at which the front end of the second connecting plate opens forward and upward is relatively small, enabling it to better withstand the impact force of the door leaf.

[0010] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present invention are as follows: First, by providing the first connecting plate and the second connecting plate that can be folded and unfolded on the lower suction seat, on the one hand, it can increase the lifting height of the magnetic attraction plate when unfolded, and on the other hand, it can shorten the length of the magnetic attraction plate, thereby reducing the overall length dimension of the lower suction seat, solving the problems in the prior art that the lifting height of the magnetic attraction plate of the lower suction seat is small and the size of the lower suction seat is large and not aesthetically pleasing. Second, since

[0011] the first connecting plate and the second connecting plate are rotatably connected, when the second connecting plate is adsorbed and lifted, it can self-rotate and fit onto the lower surface of the upper suction seat. Compared with the prior art, there is no need to precisely adjust the distance between the upper suction seat and the lower suction seat. The second connecting plate and the upper suction seat can be combined and maintain the maximum suction connection area, which well ensures the stable suction connection between the upper suction seat and the lower suction seat, enabling the door leaf to be quickly and stably stopped from rotating. Third, under the condition that the upper suction seat and the lower suction seat have the same height, when the folded first connecting plate and the second connecting plate are unfolded, the opening angle of the two connecting plates is smaller than the opening angle of a single connecting plate in the prior art. The advantage of this setting is that the second connecting plate is not easily flipped backward when bearing the horizontal impact force of the door leaf, so that the second connecting plate can better limit the rotation of the lower suction seat and the door leaf.

[0012] When the magnetic attraction plate is in the folded state, the second connecting plate is stacked on the first connecting plate. To further reduce the occupied space of the magnetic attraction plate, a further technical solution can be that the first connecting plate is provided with a notch at the end connected to the second connecting plate. When the magnetic attraction plate is in the folded state, the second connecting plate can rotate into the notch and be flush with the first connecting plate.

[0013] To limit the rotation range of the second connecting plate, a limiting block extending towards the notch side is provided on the notch side wall of the first connecting plate, and the limiting block can limit the rotation range of the second connecting plate. For the convenience of control, further, a limiting groove cooperating with the limiting block is also provided on the side wall of the second connecting plate.

[0014] A further technical solution may also be that a rotating shaft receiving portion is provided on the lower main body, one end of the first connecting plate is rotatably arranged in the rotating shaft receiving portion, and a stop portion is further provided on the lower main body. The stop portion protrudes above the rotating shaft receiving portion to limit the upward flipping angle of the first connecting plate to be less than 80°. This can prevent the first connecting plate from flipping to the vertical position and being unable to rotate back to the lower main body.

[0015] A further technical solution may also be that the lower surface of the upper main body is inclined upwards from back to front. A magnet mounting hole is provided on the side wall of the upper main body, and the magnet mounting hole is arranged obliquely along the lower surface. The magnet is arranged in the magnet mounting hole. The lower surface of the upper main body is the surface that is attracted and connected to the second connecting plate, and the inclined attracting surface can better achieve the combination with the second connecting plate.

[0016] A further technical solution may also be that the upper suction seat further includes a baffle, the baffle is rotatably connected to the upper main body, and the lower end of the baffle extends downwards to the front side of the lower surface of the upper main body, thereby limiting the forward sliding distance of the second connecting plate.

[0017] A further technical solution may also be that a hook arm is further provided on the baffle. The hook arm is connected to the lower end of the baffle and extends backwards to the lower side of the lower surface of the upper main body. A buckling space allowing the front end of the second connecting plate to be inserted is formed between the hook arm and the upper main body. The upper suction seat further includes a compression spring, and the compression spring is arranged between the upper main body and the baffle. Under the action of the compression spring, the lower end of the baffle and the hook arm can rotate and press the second connecting plate towards the lower surface of the upper main body.

[0018] A further technical solution may also be that a rib is provided at the front end of the second connecting plate, and a groove is provided on the hook arm. When the front end of the second connecting plate extends into the buckling space, the rib can be combined with the groove to buckle the second connecting plate and the hook arm together.

[0019] A further technical solution may also be that a rib is provided at the front end of the second connecting plate, and a groove is provided on the hook arm. When the front end of the second connecting plate extends into the buckling space, the rib can be combined with the groove to buckle the second connecting plate and the hook arm together.

[0020] Due to the above characteristics and advantages of the present invention, it can be applied to a self-adaptive door stopper. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the self - adapting door stopper in the axial direction, showing the separated state; Figure 2 is a schematic structural diagram of the self - adapting door stopper in the axial direction, showing the combined state;

[0022] Figure 3 is a schematic cross - sectional structural diagram of the self - adapting door stopper in the combined state; Figure 4 is a partially enlarged structural diagram at M in Figure 3;

[0023] Figure 5 is an exploded structural diagram of the upper suction seat; Figure 6 is an exploded structural diagram of the lower suction seat;

[0024] Figure 7 is a schematic structural diagram of the first connecting plate in the axial direction; Figure 8 is a schematic structural diagram of the second connecting plate in the axial direction. Detailed implementation manners

[0025] The following further describes the structure of the self - adapting door stopper applying the technical solution of the present invention in conjunction with the accompanying drawings. Except for those clearly stated as equivalent or alternative implementation manners, the various implementation details disclosed below can be selectively applied or combined and applied in one embodiment even if there is no direct functional association or synergy relationship.

[0026] As shown in Figures 1 - 6, a self - adapting door stopper includes an upper suction seat 1 and a lower suction seat 2. The upper suction seat 1 is connected to the door leaf 100. The upper suction seat 1 includes an upper main body 3 and a magnet 4, and the magnet 4 is arranged at the bottom of the upper main body 3. The lower suction seat 2 is fixedly connected to the ground. The lower suction seat 2 includes a lower main body 5 and a magnetic suction plate 6. The magnetic suction plate 6 is rotatably connected to the lower main body 5. The magnetic suction plate 6 includes a first connecting plate 61 and a second connecting plate 62. Two ends of the first connecting plate 61 are respectively rotatably connected to the lower main body 5 and the second connecting plate 62. The second connecting plate 62 is rotatably connected to the first connecting plate 61. When the upper suction seat 1 passes over the upper part of the lower suction seat 2 from front to back along with the door leaf 100, the magnet 4 can suck up the first connecting plate 61 and the second connecting plate 62. After being sucked up, the second connecting plate 62 can rotate so as to adapt to and lie flat against the lower surface of the magnet 4 or the upper main body 3. Since the first connecting plate 61 and the second connecting plate 62 are rotatably connected, when the second connecting plate 62 is adsorbed and lifted, it can rotate itself to adapt to the upper...

[0027] On the lower surface of the upper suction seat 1, compared with the prior art, there is no need to precisely adjust the distance between the upper suction seat 1 and the lower suction seat 2. The second connecting plate 62 and the upper suction seat 1 can both be combined and maintain the maximum suction connection area, which well ensures that the upper suction seat 1 and the lower suction seat 2 can be stably suction-connected, enabling the door leaf 100 to be quickly and stably stopped from rotating.

[0028] For the convenience of understanding, the front-back direction in the text can be understood as follows: before the lower suction seat 2 is combined with the upper suction seat 1, the end of the lower suction seat 2 facing the upper suction seat 1 or the door leaf 100 is the front end, and the end away from the upper suction seat 1 or the door leaf 100 is the rear end. The front-back direction of other components is taken as a reference.

[0029] The upper suction seat 1 is a component connected to the door leaf 100 and can move back and forth with the door leaf 100, and the upper suction seat 1 is arranged above the lower suction seat 2. The connection method between the upper main body 3 and the door leaf 100 includes at least two types. The first type is to set a groove (not shown in the figure) at the bottom of the door leaf 100, and the upper main body 3 is installed in the groove. In this connection method, the upper suction seat 1 is completely blocked, and the overall aesthetics is good. The second type is as Figure 1 shown. There are connection through holes provided on the upper main body 3, and screws pass through the connection through holes to fixedly connect the upper main body 3 to the side wall of the door leaf 100. Relatively speaking, the second installation method is more convenient for the installation, adjustment, and maintenance of the upper suction seat 1. In the second connection method, the upper suction seat 1 further includes a housing 11 arranged outside the upper main body 3, and the upper main body 3 and the magnet 4 can be well protected through the housing 11.

[0030] Among them, the installation method of the magnet 4 is also diverse. The first installation method is to set an installation opening with a downward opening at the bottom of the upper main body 3 (not shown in the figure), and the magnet 4 is installed in this installation opening. In this installation method, the lower surface of the magnet 4 is exposed and can be suction-connected with the second connecting plate 62, and the bonding force is relatively strong, but the magnet 4 needs to be strengthened and fastened or assisted by glue for connection. Another method is to set magnet installation holes 31 on the side wall of the upper main body 3, as shown in

[0031] As shown in FIGS. 3 and 5, the magnet mounting hole 31 is provided on the right side wall of the upper main body 3. The magnet 4 is disposed in the magnet mounting hole 31 and is covered by the outer housing 11 on the outside. In this mounting manner, the magnet 4 is separated and protected by the lower wall body of the magnet mounting hole 31. However, since the thickness of the lower wall body is very small, the influence on the suction force is not significant, and the mounting of the magnet 4 is very convenient, which is beneficial to improving the mounting efficiency. Since the magnet 4 can be mounted in an exposed or retracted manner, the second connecting plate 62 can be attached to the lower surface of the magnet 4 or the upper main body 3 after being attracted. Of course, the lower surface of the magnet 4 or the upper main body 3 can be arranged horizontally or obliquely.

[0032] Furthermore, the lower surface of the upper main body 3 is arranged to incline upward from the rear to the front. The magnet mounting hole 31 provided on the side wall of the upper main body 3 is also arranged to incline along the lower surface of the upper main body 3, and the magnet 4 is disposed in the magnet mounting hole 31. The lower surface of the upper main body 3 is the surface that is attracted and connected to the second connecting plate 62. The inclined suction surface can better achieve the combination with the second connecting plate 62 that is also arranged to incline when being attracted.

[0033] The lower suction seat 2 is a member fixed to the ground, but the magnetic attraction plate 6 connected to the lower main body 5 can be magnetically

[0034] The iron plate 4 is attracted. When the magnetic attraction plate 6 is attracted and combined with the magnet 4, a resistance can be formed to limit the rotation of the door leaf 100. A storage hole 51 is provided on the lower body 5. The first connecting plate 61 and the second connecting plate 62 can be folded and stored in the storage hole 51, and generally do not extend beyond the lower body 5. There are two folding methods for the first connecting plate 61 and the second connecting plate 62. The first method is that when the magnetic attraction plate 6 is in the folded state, the second connecting plate 62 is stacked on the first connecting plate 61. The second method is as shown in FIGS. 6 to 7. A notch 610 is provided at one end of the first connecting plate 61 where it is connected to the second connecting plate 62. When the magnetic attraction plate 6 is in the folded state, the second connecting plate 62 can rotate into the notch 610 and be flush with the first connecting plate 61. The second folding method can better reduce the occupied space of the magnetic attraction plate 6. By providing the first connecting plate 61 and the second connecting plate 62 that can be folded and unfolded on the lower suction base 2, on the one hand, the lifting height of the unfolded magnetic attraction plate 6 can be increased, and on the other hand, the length of the magnetic attraction plate 6 can be shortened, thereby reducing the overall length dimension of the lower suction base 2, solving the problems in the prior art that the lifting height of the magnetic attraction plate 6 of the lower suction base 2 is small and the size of the lower suction base 2 is large and not beautiful.

[0035] The magnetic attraction plate 6 is a magnetic iron plate that can be attracted by the magnet 4. The magnetic attraction plate 6 includes the first connecting plate 61 and the second connecting plate 62 that are rotatably connected. The second connecting plate 62 is a movable member arranged at the end. To ensure the attraction effect between the magnetic attraction plate 6 and the magnet 4, both the first connecting plate 61 and the second connecting plate 62 are magnetic iron plates or at least the second connecting plate 62 is a magnetic iron plate.

[0036] Further, the first connecting plate 61 and the second connecting plate 62 are two plate-like members that are rotatably connected, and the two can be folded and stored or unfolded and extended by rotation. In the unfolded and extended state, the lower body 5, the first connecting plate 61 and the second connecting plate 62 are in a Z shape. The lower end of the first connecting plate 61 is rotatably connected to the lower body 5, and the upper end of the first connecting plate 61 is connected to the second connecting plate 62. The connection position between the first connecting plate 61 and the second connecting plate 62 is flexible, and the connection position can be set at the end or middle of the second connecting plate 62, so that the other end of the second connecting plate 62 becomes a free end. There are at least the following two situations for the specific connection method of the lower body 5, the first connecting plate 61 and the second connecting plate 62. The first one is shown in FIGS. 3 and 6. The front end of the first connecting plate 61 is connected to the front end of the lower body

[0037] 5, the rear end of the first connecting plate 61 is connected to the rear end of the second connecting plate 62, and the front end of the second connecting plate 62 faces the upper suction seat 1 and can swing up and down; the second one is that the rear end of the first connecting plate 61 is connected to the rear end of the lower body 5, the front end of the first connecting plate 61 is connected to the front end of the second connecting plate 62, and the rear end of the second connecting plate 62 can swing up and down. The first one is the preferred connection method because when the upper suction seat

[0038] 1 and the lower suction seat 2 are of the same height, when the first connecting plate 61 and the second connecting plate 62 arranged in a folded manner are unfolded, the opening angle of the two connecting plates is smaller than the opening angle of a single connecting plate in the prior art. The advantage of the first connection method is that the second connecting plate 62 is not easily flipped backward when bearing the horizontal impact force of the door leaf 100, so that the second connecting plate 62 can

[0039] better limit the rotation of the lower suction seat 2 and the door leaf 100.

[0040] In order to limit the rotation range of the second connecting plate 62, a limiting block 612 extending toward the notch 610 is provided on the notch side wall 611 of the first connecting plate 61, and the limiting block 612 can limit the rotation range of the second connecting plate 62. For the convenience of control, further, a limiting groove 621 cooperating with the limiting block 612 is also provided on the side wall of the second connecting plate 62.

[0041] In order to limit the rotation range of the first connecting plate 61, a rotating shaft receiving portion 52 is provided on the lower main body 5, and one end of the first connecting plate 61 is rotatably arranged in the rotating shaft receiving portion 52. A stop portion 53 is further provided on the lower main body 5. The stop portion 53 protrudes above the rotating shaft receiving portion 52 to limit the upward flipping angle of the first connecting plate 61 to be less than 80°. In practical applications, the upward flipping angle of the first connecting plate 61 is generally controlled to be 75°, 70°, 65° or 60°. This can prevent the first connecting plate 61 from flipping to the vertical position and being unable to rotate back to the receiving hole 51 of the lower main body 5.

[0042] A further technical solution may also be that the upper suction seat 1 further includes a baffle 7. The baffle 7 is rotatably connected to the upper main body 3, and the lower end of the baffle 7 extends downward to the front side of the lower surface of the upper main body 3, so as to limit the forward sliding distance of the second connecting plate 62.

[0043] A further technical solution may also be that a hook arm 71 is further provided on the baffle 7. The hook arm 71 is connected to the lower end of the baffle 7 and extends backward below the lower surface of the upper main body 3. A fastening space 70 is formed between the hook arm 71 and the upper main body 3 for the front end of the second connecting plate 62 to be inserted. The upper suction seat 1 further includes a compression spring 8. The compression spring 8 is arranged between the main body and the baffle 7. Under the action of the compression spring 8, the lower end of the baffle 7 and the hook arm 71 can rotate and press the second connecting plate 62 against the lower surface of the upper main body 3.

[0044] A further technical solution may also be that a rib 622 is provided at the front end of the second connecting plate 62, and a groove 710 is provided on the hook arm 71. When the front end of the second connecting plate 62 extends into the fastening space 70, the rib 622 can be combined with the groove 710 so that the second connecting plate 62 is buckled with the hook arm 71.

Claims

1. Self-adaptive door stopper, comprising an upper suction base and a lower suction base. The upper suction base is connected to the door leaf. The upper suction base includes an upper main body and a magnet, and the magnet is arranged at the bottom of the upper main body; the lower suction base is fixedly connected to the ground, and the lower suction base includes a lower main body and a magnetic suction plate, and the magnetic suction plate is rotatably connected to the lower main body; characterized in that, The magnetic attraction plate includes a first connecting plate and a second connecting plate. Two ends of the first connecting plate are respectively rotatably connected to the lower body and the second connecting plate, and the second connecting plate is rotatably connected to the first connecting plate. When the upper suction seat passes above the lower suction seat from front to back along with the door leaf, the magnet can suck up the first connecting plate and the second connecting plate, and after being sucked up, the second connecting plate can rotate so as to be adaptively and flatly attached to the lower surface of the magnet or the upper body.

2. The self-adaptive door stopper according to claim 1, wherein A storage hole is provided on the lower body, and the first connecting plate and the second connecting plate can be folded and stored in the storage hole.

3. The self-adaptive door stopper according to claim 2, characterized in that, When the magnetic attraction plate is in a folded state, the second connecting plate is stacked on the first connecting plate.

4. The self-adaptive door stopper according to claim 2, wherein A notch is provided at one end of the first connecting plate where it is connected to the second connecting plate. When the magnetic attraction plate is in a folded state, the second connecting plate can rotate into the notch and be flush with the first connecting plate.

5. The self-adaptive door stopper according to claim 4, wherein, A limiting block protruding towards the notch side is provided on the side wall of the notch of the first connecting plate, and the limiting block can limit the rotation range of the second connecting plate.

6. The self - adapting door stopper according to any one of claims 1 to 5, characterized in that, A rotating shaft receiving portion is provided on the lower body, and one end of the first connecting plate is rotatably arranged in the rotating shaft receiving portion. A stop portion is further provided on the lower body, and the stop portion protrudes above the rotating shaft receiving portion so as to limit the upward flipping angle of the first connecting plate to be less than 80°.

7. The self-adaptive door stopper according to any one of claims 1 to 5, characterized in that, The lower surface of the upper body is arranged to incline upwards from back to front. A magnet mounting hole is provided on the side wall of the upper body, and the magnet mounting hole is arranged to incline along the lower surface, and the magnet is arranged in the magnet mounting hole.

8. The self-adaptive door stopper according to claim 7, wherein The upper suction seat further includes a baffle plate, the baffle plate is rotatably connected to the upper body, and the lower end of the baffle plate extends downwards to the front side of the lower surface of the upper body, so as to limit the forward sliding distance of the second connecting plate.

9. The self - adapting door stopper according to claim 8, wherein, A hook arm is further provided on the baffle plate. The hook arm is connected to the lower end of the baffle plate and extends backwards below the lower surface of the upper body. A fastening space allowing the front end of the second connecting plate to be inserted is formed between the hook arm and the upper body. The upper suction seat further includes a compression spring, the compression spring is arranged between the upper body and the baffle plate, and under the action of the compression spring, the lower end of the baffle plate and the hook arm can rotate and press the second connecting plate towards the lower surface of the upper body.

10. The self - adapting door stopper according to claim 9, characterized in that, A rib is provided at the front end of the second connecting plate, and a groove is provided on the hook arm. When the front end of the second connecting plate extends into the fastening space, the rib can be combined with the groove so as to fasten the second connecting plate and the hook arm together.

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